Stoker construction.



W. J. KENNEY. 1 STOKER CONSTRUCTION. APPLICATION FILED MAY 24, 1913.

Pateanted Bea. 7, 1915.

3 SHEETS-SHEET 1- l3? Menf -W"? I I v W. J. KENNEY.

STOKER CONSTRUCTION. APPLICATIONZFILE'D MAS/'24, 19's.

mmgms, Patented 1090.7,1915.

w. 1.. KENNEY. STGKER CONSTRUCTWN. 1 APPLICATION F ILED MAY 24. 1913.

Patented Dec. 7, 1915.

3 SHEETS-SHEET 3.

pi Tan aTaTne TaTianT arr-Tea WILLIAM J'DHN KENNEY, F WILMETTE, ILLINOISQASSIGNOR T0 ITNDER-FEER STOKER COMPANY OF AMERICA, OF CHICAGO, ILLINOIS, A CORPORATION OF NEW JERSEY.

' STOIZEE CONSTRUCTION.

Specification of Letters Patent.

Patented Dec. 7, 1915.;

application filed May 24, 191 3. Serial No. 769,564.

-' .ltion .,,15i' Generally speaking, my invention has for object to simplify and improve the construction of under-feed stokers.

1 Viewed in one of its aspects, my invention may be said to have for its object to provide means for securing a more perfect distribution of the fuel in under-feed stokers than has heretofore been possible.

Viewed in another of its aspects, my in 'a suitable power-actuated ram, 6.

vention may be said to have for its object to produce asim'ple and novel dead plate conwhereby' the assembling of the stoker will be made simple and easy and the renewal of worn parts may be effected in a simple and convenient manner without involving a waste of parts which are still useful. The various features of novelty whereby my invention is characterized will hereinafter he pointed out with particularity in my invention and of its objects and advantages, reference may be had to the follow.-

ing detailed description taken in connection with the accompanying drawings, wherein: 4t) F1gure 1 1s a vertical longitudinal section through a-portion of a furnace contain ng a. stoker arranged in accordance with a preferred form of my invention; Fig. 2 is a top plan view of the structure shown in Fig. 1; Fig. 3 is a central .vertical longitu- .dinal section, on an enlarged scale, through "the retort shown in Figs. 1 and 2; Fig. 4: is V 'a viewlooking toward the right from the left hand end of Fig. 3; Fig. 5 is a top plan view, on. an enlarged scale, of one of the dead plates, a section between the ends being broken away; Fig. 6 is a longitudinal section-on an enlarged scale taken approximately on line 66 of Fig. 5 or on line 6-6 of Fig. 9, the major portion of the dead struction for use in under-feed stokers,

the claims; but, for a full understanding of plate between the ends thereof being broken away; 7 is a view similar to Fig. 6 taken approximately on line 77 of Fig. 5 or line 7 7'of Fig. 9; Fig. 8 is a view similar to Figs. 6 and 7 taken approximately on line 88 of Fig. 5 or line 8-8 of Fig. 9;

- Fig. 9 is a section taken on line 99 of Fig.

6; Fig. 10 is a section taken approximately on line 10-1O of Fig. 7; and Fig. 11 is a side view of one of the supporting bars of the dead plate, the middle part being broken away.

Referring to the drawings, 1 represents a furnace having therein the retort, 2, of an under-feed Stoker. Between each side of the furnace and the retort is located a dead plate, 3, in which are mounted movable dogs, 4, which, through their movement, break the clinkers and ashes from the edges of the retort and feed them rearwardly. The retort is of the type open at the front end and at the top, the fuel being fed into the front end from a hopper, 5, by means of rear end of the retort. its progress in the f longitudinal direction is arrested and the incoming fuel therefore causes that already in the retort to rise up through the combastion zone at the top of the retort ,and finally to well over the sides of the retort upon the dead plates. better distribution of the fuel may be; 0 tained by, so constructing the retort that I have found thl at a the upward movement ofthe fuel is not i left wholly under the control of the. resistance offered by the rearend of the retort and the resistance between the individual pieces of the mass of fuel in the retort; for, if the resistance to upward movement along the rear end of the retort be slight, it may be that an excess of fuel will travel to the rear end of the retort .before rising. Any

travel to the rear en'l or" the retort before rising'naay be reduced by providing in'the retort between the end thereof suitable deflectors which will extcndacross the path of a portioilor portions of the rearwardlyinoving'inass and change the course of such portion or portions so as to make it or them rise to,the top of the retort at some inter mediate point or points. In the arrangement shown there is a single rearwardlyinclined partition arranged transversely of the retort at some distance in advance of the rear end, the central portion of the partition being removed from the top to the bottom so as to prddi'lce, 1n efiect, two wings,

7 and 8, extending toward each other from opposite sides of passage back through the center of the retort. lVit-h this arrangement, the central body of the rearwaidly-moving fuel in the. retort is free ,to travel to the rear end past the partition thus supplying the rear end of 'the retort with'sutlicient fuel to take care of the need in this vicinity; while those portions of the rearwardly-inoving mass located at the sides of the retort are arrested the retort, but having their inner edges separated so as to provide a clear by the inclined partitionand caused to rise high enough to bring the deflected fuel into the combustion zone withoutitself having parts extending into a hot zone where they 10, in the partition maytake various forms but I prefer to make it somewhat wider at the bottom than at the top and to round extending theen'tire length 1 TWith. this 'old' ar zone- 1 3o'rtion of a ,essa'ry to'throw away the'entire land replaceit with a new he upper inner corners of the wings as indicated at 11. i f

Heretofore the stationary parts of the dead plates at the sides of the retorts have been made in the form'of single members of the retort. angement, an injury to dead plate makes it necdead plate one, although plate may be This makes the process dead "plates" wasteful of ma- -perhaps almost the :entire 111; good condition.

of renewing terial and also of the workingmans time,

s1nce considerable time may take out a dead plate, remove the cleaning dogs therefrom, place the dogs in a new dead plate and then assemble the new dead plate in the furnace. In the same way, where it has been desired to replace a. single dog an entire dead plate has often to be disturbed. In accordance with my invention I have so arranged the dead plate be required to would soon be burned away. The opening,

structure that any worn part may be removed. without wasting or even ,disturl'iing the remainder and any dog may be removed or replaccdquickly and conveniently without disturbing any considerable part of the stationary structure. In order to obtain the above results, I make each dead plate of a series of individual units which are laid upon supporting bars and locked thereto in a simple manner; the bearings '1 for the'dogs being arranged between the dead plate units and the. supporting bars so that the dogs are held inplace by the dead plate units and any dog may readily be removed after the adjacent dead plate unit is lifted out of theway. In the av rangcment shown, there are in the furnace at each side of the retort three parallel bars, 13, lland 15 extending longitudinally of the retort; one of the bars lying next to the retort, the second bar at the side of the furnace, and the third bar midway between the other two. Each dead plate is made of a number of short nnits each long enough to extend acro'ss all three of the bars. The end units of the dead platesare indicated at 16 and 1'7, respectively, while the inter mediate units, which will usually all be alike are indicated at 18. Each unit has flanges, l9 "and 20, at its ends, the'flangcs being far enough apart to leave a space between the inner side of each flange and. the corresponding supporting bar. Di.- tributed along the outer faces of the two outside bars 13 and 15, are a series of lateral projections or pins 21. On the inner sid of the flanges l9 and ZO are inwaidly tending projections 22, lying in a plane be.- low the pins or projections 21. When the units of the dead plates are assembled upon the supporting bars, two'long rods. 52th ar slipped inside of the. flanges 19. and fili and between the pro ections 21 and 22, ea' 1 l'k" extending the entire length of the plate. l-Vhen the rodsfSfi-l are. in pos they engage with the upper sides 0 projections 22 on the dead plate the under sides of the proje the bars and therefore serve pk'asitivi igloclr the dead plate units down Mi t-ll 11a- 6 supporting bars.

In the upper edgs of the supporting ears are open seats or bearings, 95, spaced apart to conform to the spacing between the i p which serve to move the chin and a.--:lu.s backward along thedcad plates. The dead. plate units are provided with recesses hearings in their under sides in positions to register with the recesses or hearing the bars, so that when the dead plate. an are assembled on the bars they form the latter closed bearing; seals lor the. ioninals 26 oi the dogs. For the suite of cl .ii nose the dogs have been omitted from I (3 to 10 and the journals therefor have i.

represented as taking the form of shafts. in the arrangemenr, shown the dogs in each dead plate are arranged in two longitudinal rows so ihaseach dead plate is provided with two openings, 27., inwhich the dogs are adapted to lie. This arr-an gemeni, leaves narrow lo'ngitudinr l p1eces, fl8, at; the sides of and between lzhe r-Wc o EBEZQ'J'S' and in order dial; rhenpward stresses the dos l plates d ne so the operation of rho dogs will norhe horns Wholly by the narrow pieces beside :twcen dogs, it is advisable so she '2';

therein. c at the ends of the pieces 5'38- and directly above the hearing sears Q in the bars. --This arrangemeai. bring one-hall, 29, of each of the top hearing seats at or very close to a-por'tion of the dead plate which is continuous from one side of the dead plate a the other; the other half, 30,

of each of the top hearing seals lying in the under sides the free ends of the marchers 9 8. The inembersil lying at the sides of the dead plates are reinforced and stiffened by the flanges l9 20 while the central member may stiiiened by means oi down" wardly-cxtending flanges, 551, lying onop posits sides of the central supporting? bar 14.. Furthermore, each unit or sectionpref erably has a pars adapted to underlie the adjacent edge of the 11ext;,unit or section. la the arranges lens shown, each. of the flanges 19-, 20 and 31 has zit one end lug and at the opposite ends lug lhe lugs being so arranged ihabthe lugs 33 on one unit underlie the lugs on iheother unit when. the parts of the dead plate. are assembled, so. that each dead plate is held down at one end by the adjacent dead plate.

he lugs 32 on the flanges 19 and 20 may be so placed that they will engage with the under side of the rods 23 and. by placing at the opposite ends of these flanges lugs 36 adapted to overlie the rods 23, rods vWill servo not only hold uni of she o the dead and the of the n-rrs ondins; scat.

she es thatlhe joints dill dead plate units becomes Worn or it is de sired for any other reason to remove it, all that it is necessary to do is to Withdraw the rods 23 and then the unit is free to be lifted out. Upon replacing she unit or a new one and slipping the rods in place again the Work is finished. In case one of the dogs is to be removed, the rods are withdrawn so that one or both. of the dead plate units overlying the journals of the dog may be lifteol, whereupon the dog is left free to be lifted out hodify ll: Will thus be seen that l have provided a simple constrl'zciion and arrangement ivlzich facilitates the assembling of the dead platestructure With its dogs, initially, and thereafter makes ia an easy matter to remove any desired section of the dead plate or any one of the dogs, Without disturbing the rest of the structure and Without niaking it necessary to discard any more of the structure than should he discarded.

I claim: 1. A dead 1 comprising separated parallel supporting bars, series or plates arranged in a row on said bars, lateral projections on the bars, projections on the plates arranged in a plane below the projections on the bars, and rods extending longitudinally of the bars and eachengaging with the under sides of the projections on one of the bars and with the top sides of the corresponding projections on the plates.

A. dead plate structure for a furnace comprising separated parallel supporting bars, a series of places arranged in a lOW on said liars, lateral projections on the bars, projections on the plates arranged. in a plane below the projections on the bars, and rods extending longitudinally of the bars and engaging with the under sides of the projections on the bars and with the top sides of the projections on the plates, each plate havirm" at one edge a shoulder underlying the ad acent plate.

3. A dead plate structure for a furnace comprising separated parallel supporting bars, spacers between said bars for holding them in proper relation ,to each other, a series of plates arranged in a row on said bars, lateral projections on the bars projections on the lates arran 'ed in a olane be low the projections on the bars, and rods extending longitudinally of the bars and each onpiagrii'lg with [the under sides of the projections on one. of the bars and with the top sides of the corresponding; projections 0n the plates.

4-. A. dead plafio structure for a furnace comprising parallel nparaigcd supporting liars, a series indi. rdual plates arranged r edge a row along said liars and Wing openin there; ZU'Hf ll.

detlacnahly hold ilatc srooinire for a furnacej the tops of the bars.

the furnace,

on the bars, said bars having open seats in their upper edges, said plates aving on their under sides open seats registering with 1n a row on the bars on each side of the rea continuous ash-support tort and forming ing dead plate, said plates having dog-receiving openings therethrough, means for detachably locking said plates to the corresponding bars, dogs lying in the aforesaid openings in said plates, journals extending laterally from the dogs, and there being bearings for said journals arranged partly in the under side of the plates and partly in 6. In combination, a furnace, a retort in the furnace, separated parallel longitudinal supporting bars at each side of the retort, a

series of individual plates arranged in a row on the bars on each side of the retort, said dead plates having dog-receiving openings, therethrough, means for detachably locking said plates to the corresponding bars, dogs lying .in ings in said plates, journals extending laterally from the dogs, and there being bearings for said journals arranged partly in the under side of the plates and partly in the tops of the bars, bearing lying at the juncture of two of the plates and being located in part in each/of the two plates.

In testimony whereofi l cation in the WIL Witnesses:

MARGARET FALAHEE, MATTIE D. STRETCH.

sign this specifiresence of two Witnesses.

IAM JOHN KEN N EY..

the aforesaid openthe upper half of each 

